Brief Communication: measurement of boundary layer turbulent transition using an acoustic microphone unit
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2025-08-22
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1946-3855
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Lawson NJ, Zachos PK. (2025) Brief Communication: measurement of boundary layer turbulent transition using an acoustic microphone unit. SAE International Journal of Aerospace, Volume 18, Issue 2, pp. 167-173. SAE 01-18-02-0011
Abstract
In this article the transition of a laminar boundary layer (BL) over a flat plate is characterized using an acoustic technique with a pitot probe linked to a microphone unit. The probe was traversed along a BL plate at a fixed wind tunnel flow velocity of 5.5 m/s. A spectral analysis of the acoustic fluctuations showed that this setup can estimate the streamwise location and length of the BL transition region, as well as the BL thickness, by using the intermittency similitude approach. Further work is required to quantify the uncertainty caused by signal attenuation within the data acquisition system.
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Git repository
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Boundary layer, Flow, measurement, Aerodynamics, 4012 Fluid Mechanics and Thermal Engineering, 40 Engineering, 4001 Aerospace engineering
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Attribution 4.0 International